/*
 * Copyright (c) 2017, MegaEase
 * All rights reserved.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.megaease.easeagent.metrics.model;

import java.util.Map;

/**
 * GaugeMetricModel is dedicated to producing gauge data with label.
 * <p>Each gauge metric must to produce a object which implement
 * {@code GaugeMetricModel} interface</p> in our metric collecting
 * framework.
 */
public interface GaugeMetricModel {
    /**
     * Returning gauge data and its label.
     *
     * @return a map which contains field-value pairs of gauge data to serialize JSON data.
     */
    Map<String, Object> toHashMap();
}
